Hose clamp



oc; 26, 194s.

A. A. 'KOLLMAN' HosE GLAMP Filed April 27, 1944 AL EXANDEA. HOLL/VAN Patented Octe 26, i948 murga stares garant @WM l Claim.

, This invention relates generallyto the class to provide a hose clamp, employing a band mem,

ber,.in which a novel means is provided for draw ing the ends of the band tightly together and in overlapping relation so that there will be obtained a complete annular compression band around the hose Without pinching the `hose and without leaving any portion where clamping pressure is not applied. e i

Another object of the invention is to provide an improved hose clamp having a novel screw actuated shiftable element which is attached to one end of the band and is drawn up upon a screw, carried by the other end of the band, so as to bring about the-desired constructionof the band around the hose.

Another object of the invention is to provide a hose clamp having a band carrying a guide member, in which is loosely or swivelly mounted ascrew, with a dogging sleeve mounted upon the screw and adapted for connection in a novel manner with the free end of the band to draw such free end tightly into overlapping relation with the underlying adjacent end of the band,

The invention will be best understood from a consideration of the following detailed description taken with the accompanying drawing-forming a part of the specification, with the understanding, however, that the invention is not conned to a strict conformity with the showing of the drawing but may be changed or modified so long as such changes or modiicationsy do not depart materially from the salient features of the invention as expressed in the appended claim.

In the drawing:

Figure 1 is a view in plan showing one embodiment of the invention applied to a hose.

Figure 2 is a section on line 2-2 of Figure l.

Figure 3 is a section at the connected ends of the band taken substantially on the line 3-3 of Figure 4, showing the action of the clogging sleeve.

Figure 4 is a section on the line Il-ll of Figure 3.

Figure 5 is a view partly in section and partly in elevation of a portion of a modified embodiment of the invention.

Figure 6 is a plan view of the slotted end of the band shown in Figure 5.

Figure '7 is a section on the line 'I--l of Figure 6.

Figure 8 is a view in perspective oi the clogging sleeve.

Referring now more particularly to the drawing, numeral I0 generally designates Ithe hose encircling clamping band to which is attachedfin-I wardly of one end, the outstanding guide which is generally designated II. This guide has the spaced side portions I2 which are permanently joined each to a side edge ofthe band Ill inwardly of theY end I3 which may be referred to as vthe fixed end. These lside portions I2y of the guide are formed from. a single piece of metal of suitable weight and such piece of metal is shaped to provide a guide sleeve Ill which is rmain-l tained spaced from the band and longitudinally thereof. v

The band at its opposite or'free end I5i4 is pro-f vided with a series of apertures IGwhich are arranged lengthwise of the band as shownand the metal of the bandaround each of the apertures is raised or pressed outwardly,l forming a collar I'I. e'

Extending through the guide sleeve Mis a screw I8 which carries a flat headA I 9 at one end, through which is formed an aperture 20 to, receive a loclz-i ing wire, not shown. I ,Y

The head I9 is formed with a cupped shoulder 2| which receives and bears against the end of the guide sleeve' I4 as-shown in Figure 5. As is alsoshown in this figure the screw I8 is extended through the guide sleeve fromV the end thereof remote from the xed end I3 of the band. This shoulder holds the screw against side motion with respect to the adjacent end of the sleeve.

Adapted to slide into the guide sleeve I4 in surrounding relation with the screw i8 `is the tubular clogging sleeve 22 which is. interiorly threaded for engagement with lthe screw- I8. -This dogging sleeve carries the two prongs :or;dogs23 which project from the guide sleeve Ill through the slot 24 in the under side thereof, towards the band.

The dogs 23 are designed for engagement in the apertures I6, the raised collars Il providing clearance for the dogs so that they will not press against the top of the fixed end portion I3 of the band.

In the use of the hose clamp, the band is placed around the hose which is here designated 25, and the free end I 5 is run through the guide between the band end I3 and the guide sleeve I4A The clogging sleeve is initially located adjacent the end'of the screw I8 remote from the head I9 and after the free end of the band has been inserted in the guide the dogs 23 are engaged in the nearest pair of apertures I6 whereupon the screw is turned to thread the dogging sleeve back into the guide sleeve Ill. This will impose a pull upon the free end of the band and an opposite pull upon the fixed end thereof, causing the two ends to be drawn tightly into overlapping relation. Since the guide l I is set inwardly from the said xed end of the band it will be seen that the free end of the band will be drawn tightly across the xed end of the band so that pressure will be applied to the hose where the band ends overlap as well as throughout the remaining portion of the band where it contacts the body of the hose.

In order that a more positive engagement may be obtained between the dogs 23 and the edges of the collars in which they are engaged, the advancing edges of the dogs may be formed to provide lips 21 which will slip under the collars and thus prevent the dogs from escaping from the apertures or collars after a slight pulling action upon the free end of the band has been established.

While there has been described and shown circular apertures I6 having a portion of the metal of the 'band raised around them in the form of collarsA l1 the means for establishing la coupling between the dogs and the band may be in the form of slits transversely of the longitudinal center of the band, at one side of which the metal of the band is pressed up as indicated at 29. This provides a raised portion of the metal under which the flange 21 of the dog engages when it is inserted through the slit 28. Since the raised part of the metal is upon the side of the slit nearest the free end of the band it will be readily seen that when the dog is shifted toward such free end after being engaged in the slit, the desired tightening action of the band around the hose will be obtained.

From the foregoing it will be readily apparent that there is provided by thepresent invention an improved hose clamp whichcan be easily and quickly applied to a hose without the necessity of removing the hose from a pipe or other fixture to which it may be attached, and in which the connection between the clogging sleeve and the free end of the band is such Vthat failure of the securing means is unlikely because of the double engagement of the dogs in the band apertures. It willalso be readily apparent as the band is tightened the locking action between the band and the dogs becomes more positive so that danger of accidental disconnectionA is avoided.

By providing the aperture 20 in the head of the screw the clamp can be vsecured by threading a wire through such aperturelland attaching it to the guide whereby the turning of the screw under the effects of vibration, with the subsequent loosening oi the clamp, will be avoided.

It will also be apparent that by mounting the dog moving screw in spaced relation with the top of the band and tangential thereto, the free end of the band can be pulled straight across the fixed end of the band Without materially bending such free end thereby causing the two ends or the contacting portions of the band to lie rmly one upon the other and to complete the tightening or constricting circle around the hose.

I claim:

A device of the character described for engaging and drawing to a desired position an apertured end of a band-like element, comprising a relatively long cylindrical guide sleeve open at each end, the guide sleeve having a side opening from one end through a major portion of its length to form a narrow guide slot, the material of the guide sleeve at each side of said slot being extended outwardly, then extended at right angles to the rst line of extension away from the sleeve and nally extended inwardly in substantially parallel relation with the rst extension to form 'a guide through which the apertured end of the band may extend, the said guide being adapted to be secured in a fixed position, a screw extending axially through the sleeve and having a head upon one end, a bearing member carried by the screw adjacent to the head and having a depressed face engaging over and bearing against the other end of the sleeve, a dogging sleeve of substantially cylindrical form mounted within the guide sleeve for sliding movement therein, said screw being threaded through said dogging sleeve, and a dogglng prong integral with the clogging sleeve and extending through and snugly engaging in said guide slot and adapted for engagement in an aperture in the band-like element, the clogging prong having sliding engagement in the guide slot.

ALEXANDER A. KOLLMAN.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS FOREIGN PATENTS Country Date Great Britain May 28, 1936 Number Number 

